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Celine Dion poses at the Billboard Music Awards in Las Vegas. Image Credit: AP

Lady Gaga and Celine Dion have been added to the list of performers singing in honour of Frank Sinatra next month.

Zac Brown and Harry Connick Jr. will also perform at Sinatra 100 — An All-Star Grammy Concert on December 2 in Las Vegas, the Recording Academy announced on Tuesday.

Sinatra, who died in 1998 at 82, would have turned 100 on December 12.

Previously announced performers include Garth Brooks, Tony Bennett, Carrie Underwood, Alicia Keys, John Legend, Adam Levine and Usher. More performers will be announced at a later date.

The taped event at the Wynn Las Vegas Encore Theatre will air as a two-hour CBS special on December 6. The Recording Academy will announce nominees for the 2016 Grammy Awards on December 7.